vacuums background

vacuums

/ˈvækjuːmz/ /ˈvækjʊmz/

Illustration vacuums - Image 1

noun

真空，虚空

A region of space that contains no matter.

Examples :

"In science class, we learned that vacuums exist in outer space. "

在科学课上，我们学到太空中存在真空。

space physics astronomy science

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noun

吸尘器

(plural only "vacuums") A vacuum cleaner.

Examples :

"The store sells vacuums of different brands and prices. "

这家商店出售各种品牌和价格的吸尘器。

utility technology utensil machine device

Illustration vacuums - Image 1

noun

真空，虚空。

The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.

Examples :

"a vacuum of 26 inches of mercury, or 13 pounds per square inch"

一个相当于26英寸汞柱的真空，或者说每平方英寸13磅的压力差。

physics condition technology machine science

Illustration vacuums - Image 1

noun

真空

A spacetime having tensors of zero magnitude

Examples :

"Theoretical physics explores vacuums, regions of spacetime devoid of matter and energy, to understand the fundamental laws of the universe. "

理论物理学探索真空，也就是时空中没有任何物质和能量的区域，以此来理解宇宙的基本规律。

physics space theory

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verb

用真空吸尘器清扫，吸尘。

To clean (something) with a vacuum cleaner.

Examples :

"She vacuums the living room carpet every Saturday morning. "

她每个星期六早上都会用吸尘器清扫客厅的地毯。

utility technology machine device work action

Illustration vacuums - Image 1

verb

用真空吸尘器清扫，吸尘

To use a vacuum cleaner.

Examples :

"Every Saturday morning, my dad vacuums the living room. "

每个星期六早上，我爸爸都会用吸尘器清扫客厅。

utility technology machine device service action

Illustration vacuums - Image 1

verb

整理数据库, 清理数据库。

To optimise a database or database table by physically removing deleted tuples.

Examples :

"The database administrator vacuums the user table every week to improve performance by removing old, deleted accounts. "

数据库管理员每周整理用户表，通过移除旧的、已删除的账户来提升性能。

computing technical